azure/runtime/ms-rest/lib/credentials/tokenCredentials.js

Microsoft Azure Client Library for node

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information. 

'use strict';

const Constants = require('../constants');
const HeaderConstants = Constants.HeaderConstants;
const DEFAULT_AUTHORIZATION_SCHEME = 'Bearer';

/**
 * Creates a new TokenCredentials object.
 *
 * @constructor
 * @param {string} token               The token.
 * @param {string} authorizationScheme The authorization scheme.
 */
class TokenCredentials {
  constructor(token, authorizationScheme) {
    if (!token) {
      throw new Error('token cannot be null.');
    }
    this.token = token;
    this.authorizationScheme = authorizationScheme;
    if (!this.authorizationScheme) {
      this.authorizationScheme = DEFAULT_AUTHORIZATION_SCHEME;
    }
  }

  /**
   * Signs a request with the Authentication header.
   *
   * @param {WebResource} The WebResource to be signed.
   * @param {function(error)}  callback  The callback function.
   * @return {undefined}
   */
  signRequest(webResource, callback) {
    webResource.headers[HeaderConstants.AUTHORIZATION] = `${this.authorizationScheme} ${this.token}`;
    return callback(null);
  }
}

module.exports = TokenCredentials;